SQUAREBALLRADIUSTAPERBARRELROUGHINGSOLID END MILLS CBN RECOMMENDED CUTTING CONDITIONS Work Hardened steel (45─ 55HRC) Hardened steel (55 ─62HRC) Hardened steel (62─70HRC) Material AISI H13 etc. AISI D2 etc. AISI W1, AISI M2 etc. DC Revolution Table feed Depth of cut Width of cut Revolution Table feed Depth of cut Width of cut Revolution Table feed Depth of cut Width of cut (mm) (min-1) (mm/min) (IPM) ap (mm) ae (mm) (min-1) (mm/min) (IPM) ap (mm) ae (mm) (min-1) (mm/min) (IPM) ap (mm) ae (mm) 0.5 50000 750 29.5 0.01 0.2 50000 600 23.6 0.01 0.1 40000 400 15.7 0.005 0.06 1 38000 1100 43.3 0.02 0.3 38000 760 29.9 0.01 0.2 25000 400 15.7 0.01 0.1 1.5 25000 900 35.4 0.03 0.5 25000 700 27.6 0.02 0.4 17000 340 13.4 0.02 0.2 2 20000 800 31.5 0.04 0.7 20000 600 23.6 0.03 0.6 12000 300 11.8 0.02 0.3 ae Depth of cut Note 1) If the depth of cut is smaller than this table, feed rate can be increased. Note 2) Oil mist coolant is recommended. Note 3) Cutting conditions may differ considerably due to the overhang, depth of cut, and machine tool conditions. Please use the above table as a start reference point. I I279